The HairMax LaserComb Advanced 7 is indicated to treat androgenetic alopecia and promote hair growth in males who have Norwood Hamilton Classifications of IIa to V patterns of hair loss and Fitzpatrick Skin Types I to IV. The HairMax LaserComb Lux 9 is indicated to treat androgenetic alopecia and promote hair growth in males who have Norwood Hamilton Classifications of IIa to V patterns of hair loss and Fitzpatrick Skin Types I to IV. The HairMax LaserComb Professional 12 is indicated to treat androgenetic alopecia and promote hair growth in males who have Norwood Hamilton Classifications of IIa to V patterns of hair loss and Fitzpatrick Skin Types I to IV.
Device Story
Handheld low-level laser devices (Advanced 7, Lux 9, Professional 12) designed for home use by patients. Devices feature circuit boards with 7, 9, or 12 laser diodes respectively; comb teeth part hair to ensure direct scalp exposure to laser light. Operation involves moving device across scalp; audible beep (9/12 models) or vibration (7 model) every four seconds prompts user to reposition. Laser light exposure intended to promote hair growth. Clinical benefit demonstrated via increased terminal hair counts in androgenetic alopecia patients. Safety and effectiveness validated through randomized, double-blind, multi-center clinical trials and usability studies of user manual.
Clinical Evidence
Two randomized, double-blind, controlled, multi-center clinical trials conducted. Studies confirmed subject devices provide effective dose rate to promote hair growth in males with androgenetic alopecia (Norwood-Hamilton IIa-V, Fitzpatrick I-IV) with outcomes substantially equivalent to predicates. Additional usability study validated user manual for Lux 9 and Professional 12 models.
Technological Characteristics
Handheld low-level laser devices. Emits red laser light. Laser classification: Class 3R (per IEC 60825). Features comb teeth for scalp parting. Integrated timer (audible beep or vibration) for treatment intervals. Electrical safety/EMC tested to IEC 60601-1 and 60601-1-2.
Indications for Use
Indicated for males with androgenetic alopecia, Norwood Hamilton Classifications IIa to V, and Fitzpatrick Skin Types I to IV to promote hair growth and prevent further hair loss.
Regulatory Classification
Identification
An infrared lamp is a device intended for medical purposes that emits energy at infrared frequencies (approximately 700 nanometers to 50,000 nanometers) to provide topical heating.
Special Controls
*Classification.* Class II (special controls). The device, when it is an infrared therapeutic heating lamp, is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 890.9.
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# Section 5: 510(k) Summary
APR - 6 2011
The following information is provided as required by 21 CFR § 807.87 for Lexington International. LLC HairMax LaserComb Advanced 7. HairMax LaserComb Lux 9 and HairMax LaserComb Professional 12 510(k) premarket notification. In response to the Safe Medical Devices Act of 1990. the following is a summary of the safety and effectiveness information upon which the substantial equivalence determination is based.
- Sponsor: Lexington International, LLC 777 Yamato Rd. Suite 105 Boca Raton, FL 33431
Olsson Frank Weeda Contact: Casper E Uldriks Esq. 1400 Sixteenth Street, NW Suite 400 Washington DC 20036 Ph. 202-518-6385 culdriks@ofwlaw.com
Date of Submission: November 16, 2010
Proprietary Name: HairMax LaserComb Advanced 7. HairMax LaserComb Lux 9 and
HairMax LaserComb Professional 12
Common Name: Lamp. non-heating, for promotion of hair growth
Regulatory Class: II
Product Codes: OAP
Predicate Device(s): Lexington International, LLC HairMax LaserComb K060305 and K093499
Device Description:
Substantially equivalent to the HairMax LaserComb (K060305, K093499), the modified HairMax LaserComb Advanced 7, HairMax Lux 9 and HairMax Professional 12 are handheld low level laser devices that emits laser light with the intention to promote hair growth. The devices provide distributed laser light to the scalp while the comb teeth simultaneously part the user's hair to ensure the laser light reaches the user's scalp. HairMax LaserComb Advanced 7, HairMax Lux 9 and HairMax Professional 12 replace the cleared version's
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single beam laser and beam splitting reflector with a circuit board containing seven, nine, or twelve laser diodes. respectively.
#### Intended Use:
The HairMax LaserComb Advanced 7, HairMax Lux 9 and HairMax Professional 12 are indicated to treat androgenetic alopecia, promote hair growth and help prevent further hair loss in males who have Norwood Hamilton Classifications of Ila to V patterns of hair loss and Fitzpatrick Skin Types I to IV.
## Technological Characteristics
The HairMax LaserComb Advanced 7, HairMax Lux 9 and HairMax Professional 12 consist of a hand-held low level laser devices that promotes hair growth. The device provides distributed laser light to the scalp while the device's comb teeth simultaneously part the user's hair to ensure the laser light reaches the user's scalp. When in use, the device emits a beep (9 and 12 laser models) or vibration (7 laser model) every four seconds to notify the user to move the device to a new section of the scalp.
#### Performance Testing
Testing to IEC 60601-1 and 60601-1-2 confirm the device's adherence to LVD electrical and EMC safety requirements. Testing to IEC 60825 confirm the laser classification to be Class 3R, same as predicate devices.
#### Clinical Testing
Two randomized, double-blind, controlled. multi-center clinical trials were conducted to confirm the performance of the subject devices. These studies confirm that the subject devices are expected to provide an effective dose rate to promote hair growth in males with androgenetic alopecia who have Norwood-Hamilton Classifications of Ila to V patterns of hair loss and Fitzpatrick Skin Types I to IV with safety and effectiveness outcomes substantially equivalent to those of the predicate devices.
Additionally, a study was conducted to validate the HairMax LaserComb User Manual (Copyright 2009) for the Lux 9, Professional 12 beam unit and confirm usability. Participants in the study were given access to the HairMax LaserComb and the User Manual under controlled conditions. Based on the study outcomes, the device and manual were validated within a sample population that could potentially desire to use the HairMax LaserComb.
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### Substantial Equivalence
The HairMax LaserComb Advanced 7. HairMax Lux 9 and HairMax Professional 12 are as safe and effective as the predicate devices. The HairMax LaserComb Advanced 7. HairMax Lux 9 and HairMax Professional 12 have the same intended use of promoting hair growth as the predicate devices. The subject devices have the same general indications, i.e., treating androgenetic alopecia, and the same specific indication of promoting hair growth in males with androgenetic alopecia who have Norwood-Hamilton Classifications of I to V patterns of hair loss as the predicate devices.
Except for modifications to the laser delivery method and slight increases in laser output, the HairMax LaserComb Advanced 7, HairMax Lux 9 and HairMax Professional 12 is identical in technological characteristics as the HMLC as cleared in K060305 and K093499, including its red laser wavelength, its comb component, its instructions for use and its audible or vibrating timer. The modification to the HairMax LaserComb Advanced 7, HairMax Lux 9 and HairMax Professional 12 does not change the intended use of the product nor does it affect the products fundamental scientific technology. Therefore this change does not raise new questions of safety or effectiveness. This was also demonstrated in randomized, double-blind, control clinical studies evaluating changes in terminal hair-count in the evaluation zone, as well as usability studies to validate instructions for use, confirm that device modifications do not affect the safe and effective use of the devices when compared to the predicates.
For those reasons, the HairMax LaserComb Advanced 7, HairMax Lux 9 and HairMax Professional 12 satisfy FDA's substantial equivalence with respect to both the intended use and technological characteristics.
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Image /page/3/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular emblem with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the perimeter. Inside the circle is a stylized image of a human figure with three overlapping profiles, resembling a bird in flight.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD 20993-0002
777 77 11 11
Lexington International, LLC % Olsson Frank Weeda Casper E. Uldriks, Esq. 1400 Sixteenth Street. Northwest Washington, District of Columbia 20036
Re: K103368
Trade/Device Name: HairMax LaserComb Advanced 7, HairMax LaserComb Lux 9 and HairMax LaserComb Professional 12
Regulation Number: 21 CFR 890.5500 Regulation Name: Infrared lamp Regulatory Class: Class II Product Code: OAP Dated: January 26, 2011 Received: March 15, 2011
Dear Mr. Uldriks:
This letter corrects our substantially equivalent letter of April 6, 2011.
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must
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Page 2 - Casper E. Uldriks, Esq.
comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050. This letter will allow you to begin marketing your device as described in your Section 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, perforts your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Center for Devices and Radiological Health's (CDRH's) Office of Compliance at (240) 276-0115. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). For questions regarding postmarket surveillance, please contact CDRH's Office of Surveillance and Biometric's (OSB's) Division of Postmarket Surveillance at (240) 276-3474. For questions regarding the reporting of device adverse events (Medical Device Reporting (MDR)), please contact the Division of Surveillance Systems at (240) 276-3464. You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (240) 276-3150 or at its Internet address http://www.fda.gov/cdrh/industry/support/index.html.
Sincerely yours.
Aly B. Rata
Mark N. Melkerson Director Division of General, Restorative and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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## Section 4: Indications for Use Statement
510(k) Number: To be assigned Device Name: HairMax LaserComb Advanced 7, HairMax LaserComb Lux 9 and HairMax LaserComb Professional 12
## Indications for Use:
The HairMax LaserComb Advanced 7 is indicated to treat androgenetic alopecia and promote hair growth in males who have Norwood Hamilton Classifications of IIa to V patterns of hair loss and Fitzpatrick Skin Types I to IV.
The HairMax LaserComb Lux 9 is indicated to treat androgenetic alopecia and promote hair growth in males who have Norwood Hamilton Classifications of IIa to V patterns of hair loss and Fitzpatrick Skin Types I to IV.
The HairMax LaserComb Professional 12 is indicated to treat androgenetic alopecia and promote hair growth in males who have Norwood Hamilton Classifications of IIa to V patterns of hair loss and Fitzpatrick Skin Types I to IV.
Prescription Use (Part 21 CFR 801 Subpart D) AND/OR
Over-The-Counter Use X (21 CFR 807 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
NeRReOde
for mxm
Division of Surgical, Orthopedic, and Restorative Devices
510(k) Number K103368
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.